[WIP] First test of liblzma executable filters
[WIP] First test of liblzma executable filters

- See issue #75
- Filter maximum is 4, so up to 3 filters + LZMA2 can be used
- X86+PPC+ARM could be a good default
- TODO: Command line parameter so set or disable filters

- Changed VS settings, so unfortunately there are some tab/space changes in here, too.

schnaader/precomp-cpp,schnaader/precomp-cpp,sftt/precomp-cpp,sftt/precomp-cpp